I think that the BRICS is basically a formation of countries that wants to break the monopoly of the US dollar
They're basically trying to form a "global south/east" block, like the "West" (USA, UK, EU and Aus/NZ) is a block, who bullies the rest of the world and wages wars non-stop. If one can weaken the Dollar hegemony, they can become competitive. But these countries are very diverse in thinking and alliance: for instance India, they are a big buddy of the USA and hate China (they have a war being waged with knives, ongoing on their border).
When BRICS was only 5 countries, nothing much has happened, but they are slowly trying to make themselves an economic group.
Hence the New Development Bank (headed by Dilma Rousseff) to be like an IMF and World Bank but for BRICS (the IMF and World Bank essentially cause political coups and keep the "global south" poor: with coup d'etats and bribes to export these nations' wealth to the political elites in the west, by paying off one political family in said country to play ball. So one group of politicians in the US get rich, and one family in said global south country gets rich. Everyone else stays poor.
Obviously this kind of behaviour will also happen among BRICS nations, let's not kid ourselves.
The 6 new countries have all been chosen for their mineral and agricultural wealth, and I think Egypt for the Suez Canal.
That is one reason I think for the Genocide in Gaza right now. Israel and the USA wants to build the socaled "Ben Gurion Canal" from Eilat in the Gulf of Aqaba through the Negev, and out at Gaza into the Mediterranean. That's why this "port" the US is constructing in Gaza is not for humanitarian aid. It's to park war ships and eventually create a canal. They still have to deal with the Houthi's at the other end though. But they are already bombing Yemen so I guess they are next on the list of "enemies" to bomb and invade....
Hence, we need to get the populace excited about Bitcoin and the new financial system instead. Draining the US financial system of funds for war might be the only way to stop the forever-wars they wage on smaller nations with natural resources.
PS: Goldman Sachs has already predicted that IRAN has the potential of becoming one of the largest world economies in the 21st century. They have 10% of the world's oil reserves and 15% of the world's gas reserves. And lots of gold, iron, copper, lead, zinc, chromium and URANIUM. (also saffron, pistachios, caviar and dates). They also have a massive automotive industry producing cars sold all over the Middle East and Asia. Iran is helping Burkino Faso and South Africa build oil refineries now.